WiFi signals can now identify you with near-perfect accuracy

Ordinary WiFi can now identify you with near-perfect accuracy

Researchers at KIT have developed a technique that uses ordinary WiFi signals to identify people and map surroundings without cameras or connected devices. By analyzing beamforming feedback information (BFI) sent by devices to routers, the system creates images of people from multiple viewpoints. In tests with 197 participants, it achieved almost 100% identification accuracy. The method works even if you don't carry a WiFi device, as long as others' devices are active. The team warns of privacy risks and calls for safeguards in future WiFi standards.